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Objective: To compare last menstrual period and ultrasonography in predicting delivery date. Methods: We used ultrasound to scan 17, nonselected singleton pregnancies at completed weeks. The last menstrual period LMP was considered certain in 13, and uncertain in cases.

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Name the time in gestation when ultrasound is most accurate 2.

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Objective: The purpose of this study was to evaluate the accuracy of algorithms for the asment of gestational age with the use of the last menstrual period and early ultrasound information. : Last menstrual period reports show digit preference, as gestation 2.

Misclassification of births as postterm was more common in younger women, those of nonoptimal prepregnancy body weight, cigarette smokers, and women who reported last menstrual period using preferred dates of the month. Conclusion: Last menstrual period estimates of the duration of gestation are subject to both random error and a systematic tendency to overstate the duration of gestation, most likely because of delayed ovulation.

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Similar articles How does early ultrasound scan estimation of gestational age lead to higher rates of preterm birth? Yang H, et al. Am J Obstet Gynecol.

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PMID: Validity of gestational age estimates by last menstrual period and neonatal examination compared to ultrasound in Vietnam. Deputy NP, et al. BMC Pregnancy Childbirth. Early pregnancy predictors of preterm birth: the role of a prolonged menstruation-conception interval. Gardosi J, Francis A. Gardosi J, et al. Systematic misclassification of gestational age by ultrasound biometry: implications for clinical practice and research methodology in the Nordic countries. Skalkidou A, et al.

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Acta Obstet Gynecol Scand. Epub Feb 9. PMID: Review. The research implications of the selection of a gestational age estimation method.

Lynch CD, Zhang J. Lynch CD, et al. Paediatr Perinat Epidemiol.


See all similar articles. Cited by 96 datings Reliability of last menstrual period recall, an early ultrasound and a Smartphone App in predicting date of delivery and classification of preterm and post-term births. Majola L, et al. Crowdsourcing assessment of maternal blood multi-omics for predicting gestational age and preterm scan. Tarca AL, et al. Cell Rep Med. Integrated trajectories of the maternal metabolome, proteome, and immunome predict labor onset.

Stelzer IA, et al. Sci Transl Med. Comparison of first trimester dating methods for gestational age estimation and their implication on preterm birth classification in a North Indian cohort. Vijayram R, et al. FIGO different Federation of Gynecology and obstetrics initiative on lmp growth: best practice advice for screening, diagnosis, and management of fetal growth restriction.

Melamed N, et al. Int J Gynaecol Obstet. See all "Cited by" articles.

Publication types Comparative Study Actions. Research Support, Non-U. Gov't Actions. Research Support, U. Gov't, P. MeSH terms Adolescent Actions. Adult Actions. Age Factors Actions. Body Weight Actions.

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Female Actions. Humans Actions. Pregnancy Actions. Sensitivity and Specificity Actions. Smoking Actions. Time Factors Actions. Related information Cited in Books MedGen. Medical ClinicalTrials. Full text links [x] Elsevier Science. Copy Download.